seolint
seolint

Rules / jsonld rules

jsonld.valid

Default
error
Plugin
jsonld

Each JSON-LD script is valid JSON, with an @context and an @type.

Why: Search engines read structured data from JSON-LD, the format that Google recommends, to show rich results. A JSON-LD script that does not parse, or that lacks an @context or an @type, is ignored, and nothing on the page shows it. The rule does not check the properties of each type; use Google's Rich Results Test for that.

An @graph of items also passes, when each item has an @type.

When off: any JSON-LD script passes.

<!-- ✗ Fails -->
<script type="application/ld+json">
  { "@type": "Article", "headline": "Our sourdough" }
</script>

<!-- ✓ Passes -->
<script type="application/ld+json">
  {
    "@context": "https://schema.org",
    "@type": "Article",
    "headline": "Our sourdough"
  }
</script>

References